Vargas is 6-4 with a 3.65 ERA and 1.36 WHIP in 14 starts so far this season. He was named the American League's pitcher of the month in May. Right-hander Billy Buckner replaced Vargas on the roster. The team has used 10 different starting pitchers so far this season.

Vargas was drafted by the Marlins in the 2nd round of the 2004 amateur draft. The 30-year-old spent time with the Marlins, Mets and Mariners. He was traded from the Mariners to the Angels for Kendrys Morales during the offseason.